Extension Guide Price Calculator

Get a guide price for your extension. Adjust the options below to configure your chosen style. Final cost can be confirmed after a site visit and structural calculations.

1. Extension type

Single-storey extension (lean-to roof)

Single-storey extension (gable roof)

Single-storey extension (hipped roof)

Orangery-style extension (without lantern)

Orangery-style extension (with lantern)

Two-storey rear extension (with hips)

Two-storey rear extension (with extended ridge)

2. Size of extension

Enter the external dimensions in metres.

3. Roof finish

4. Rooflights (optional)

Enter the number of Velux roof windows if required.

5. Doors & windows

6. External wall finish

7. Foundations & existing structure

Foundations:

Existing structure:

8. Internal extras

9. Email your guide price

Would you like to receive these guide results in an email?